/*******************************************************************************
 * Copyright 2014 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.ai.pfa;

/** A connection between two nodes of the {@link Graph}. The connection has a non-negative cost that often represents time or
 * distance. However, the cost can be anything you want, for instance a combination of time, distance, and other factors.
 * 
 * @param <N> Type of node
 * 
 * @author davebaol */
public interface Connection<N> {

	/** Returns the non-negative cost of this connection */
	public float getCost ();

	/** Returns the node that this connection came from */
	public N getFromNode ();

	/** Returns the node that this connection leads to */
	public N getToNode ();

}
